Blood flows through an aorta of cross-sectional area 3.0 cm² at an average speed of 0.30 m/s. What is the volume flow rate?
Correct answer D. 90 cm³/s
Explanation
Volume flow rate = Av = 3.0 cm² × 30 cm/s = 90 cm³/s. Converting the speed to cm/s first avoids the factor-of-ten slips in the other options.
Answer checked How we write and check questions
Discussion